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3 years ago

PLZ: show work, solve for x:

Mathematics

1 answer:

kotegsom [21]3 years ago

8 0

x+11/-2=-8

x+11/-2 x -2= -8 x -2

x+11= 16

X+11-11=16-11

x = 5

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Now that we know the final investment value of our simple interest investment, lets use the compound interest formula to find the final investment value of the other one:
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where
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   $P$ is the initial investment
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For our problem we know that $P=5000$ , $r= \frac{4}{100} =0.04$ , and $t=5$ . Since we know that the interest is compounded quarterly (each 4 months), it mean that is compounded $\frac{12months}{4months} =3$ times per year, so $n=3$ . Now that we have all the vales, lets replace them in our formula:
$A=5000(1+ \frac{0.04}{3} )^{(3)(5)}$
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now that we know the final amounts of our investments, lets find how much difference is between them:
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We can conclude that the difference between invest $5000 in a compound interest investment vs a simple interest investment is $98.95.

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